Marlins pitcher Dan Jennings is carted off the field Thursday after being hit in the head by a line drive. (USA Today Images)

PITTSBURGH -- Miami Marlins pitcher Dan Jennings was taken to a hospital after being hit in the head by a line drive Thursday night.

Manager Mike Redmond said Jennings' eyes were open and he was responding to questions from the medical staff on the mound. Redmond said he didn't have a report on Jennings' condition after the Marlins lost to Pittsburgh 7-2.

Jennings was struck by a liner off the bat of Jordy Mercer in the seventh inning. The reliever momentarily stumbled before going to his knees after the play.

Jennings stood up to get in the cart. He put a hand up to acknowledge the crowd as he was driven away (see full recap).

Slumping Harper hits walk-off HR to lift NatsWASHINGTON -- Bryce Harper swung at the 91 mph pitch in the bottom of the 13th inning and could tell right away the ball would end up over the fence.

"I knew it was gone. I mean, I felt it," the 2012 NL Rookie of the Year said. "I haven't felt like that in a while. I haven't got extension on a ball in a pretty long time."

Harper's fourth homer of an injury-interrupted, trying season was a game-ending, two-run shot to the opposite field off righty reliever Carlos Torres, lifting Washington past the New York Mets 5-3 Thursday and giving the Nationals a season-high 4 1/2-game lead in the NL East.

Harper was hitting .250 with 14 RBIs in 2014 entering Thursday, with zero homers since July 18 (see full recap).

Peralta first to 14 wins, Brewers edge GiantsMILWAUKEE -- Wily Peralta even surprised himself with the company he keeps.

Peralta became the first 14-game winner in the majors this season, earning his fifth straight victory and pitching the Milwaukee Brewers past the San Francisco Giants 3-1 on Thursday.

"That feels amazing, man," Peralta said. "There's a lot of great starting pitchers out there. And to be able to be leading the league, that's amazing, a great feeling."

Peralta (14-6) struck out a career-high nine in 6 2-3 innings. He gave up seven hits and walked one (see full recap).

Yankees beat Tigers to take 3 of 4 in seriesNEW YORK -- After seeing his Yankees rotation mates go pitch for pitch against Detroit's three Cy Young Award winners, Shane Greene was determined to match their outings.

He did them all one better.

Greene was lifted in the ninth inning after giving up only his fifth hit, then watched as closer David Robertson got pinch-hitter Miguel Cabrera to ground into a double play in New York's 1-0 victory over the Tigers on Thursday.

"Starting pitchers, you see one guy do good, you see the next guy do good, you start to get on a roll," Greene said (see full recap).

Baez hits 2 homers as Cubs beat RockiesDENVER -- The Chicago Cubs' future looks bright even if their present is a little disappointing.

Rookie Javier Baez hit two more homers and drove in four runs, leading Kyle Hendricks and the Cubs to a 6-2 victory over the Colorado Rockies on Thursday.

The 21-year-old Baez also had an RBI single in his third major league game. The touted prospect homered in his debut Tuesday, hitting a game-deciding shot in the 12th inning on the day he was promoted from the minors.

"It didn't surprise me too much," said Hendricks, who had the best outing of his short career. "I've seen it for a couple of years and he always thrives on the big stage. Whenever we play in a big game he does well," (see full recap).